Mapping WPForms Checkbox Values to ACF Checkbox Fields

/**

Update ACF age field based on WPForms checkbox submission.

@param  int      $post_id     Post ID.

@param  array    $fields      Sanitized entry field values/properties.

@param  array    $form_data   Form settings/data.

@param  int      $entry_id    Entry ID.

@return void

 */

function wpf_dev_update_age_field_from_submission( $post_id, $fields, $form_data, $entry_id ) {

 // Only process form #83

 if ( absint( $form_data['id'] ) !== 83 ) {

 return;

 }

 // Configuration

 $wpforms_checkbox_field_id = 1;

 $acf_field_name = 'age';

 // Get ACF field object to retrieve choices dynamically

 $acf_field = get_field_object( $acf_field_name );

 if ( ! $acf_field || ! isset( $acf_field['choices'] ) ) {

 return;

 }

 // Build mapping from ACF choices (label => value)

 $value_map = array();

 foreach ( $acf_field['choices'] as $value => $label ) {

 $value_map[$label] = $value;

 }

 // Get selected values from WPForms submission

 $acf_values = array();

 if ( isset( $fields[$wpforms_checkbox_field_id] ) && 

  $fields[$wpforms_checkbox_field_id]['type'] === 'checkbox' && 

  ! empty( $fields[$wpforms_checkbox_field_id]['value'] ) ) {

 // Split checkbox values by newline

 $selected_values = explode( "\n", $fields[$wpforms_checkbox_field_id]['value'] );

 // Map WPForms values to ACF values

 foreach ( $selected_values as $value ) {

     $value = trim( $value );

     if ( isset( $value_map[$value] ) ) {

         $acf_values[] = $value_map[$value];

     }

 }

 }

 // Update ACF field

 if ( function_exists( 'update_field' ) ) {

 update_field( $acf_field_name, $acf_values, $post_id );

 }

}

add_action( 'wpforms_post_submissions_process', 'wpf_dev_update_age_field_from_submission', 10, 4 );